Question

Afla a,b si c, stiind ca:

a+b = 3/6
b+c = 5/6
a+b+c = 1

Dau coroana si 20 pct

Answer 1

Răspuns:

Explicație pas cu pas:

a+b=3/6

b+c=5/6

a+b+c=1

Inlocuim in expresie

3/6+c=1

c=1-3/6=(6-3)/6=3/6=1/2

c=1/2

a+5/6=1

a=1-5/6=(6-5)/6=1/6

a=1/6

1/6+b+1/2=1

b=1-(1/2+1/6)

b=1-(3+1)/6

b=1-4/6=(6-4)/6=2/6=1/3

b=1/3

a+b+c=1

1/6+2/6+1/2=1

(1+2+3)/6=1

6/6=1

1=1